* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: linear-gradient(135deg, #0f1419 0%, #1a2332 50%, #0f1419 100%);
    color: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 애니메이션 */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 배경 효과 */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    z-index: -1;
    background-image: 
        radial-gradient(circle at 20% 20%, #00d4ff 0%, transparent 20%),
        radial-gradient(circle at 80% 80%, #ff6b35 0%, transparent 20%),
        radial-gradient(circle at 40% 60%, #4ecdc4 0%, transparent 15%);
    animation: pulse 4s ease-in-out infinite;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    z-index: 2;
}

.hero-text h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #00d4ff, #ffffff, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 700;
    color: #4ecdc4;
    margin-bottom: 20px;
    animation: slideUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #b8c5d1;
    margin-bottom: 40px;
    animation: slideUp 1s ease-out 0.4s both;
}

.cta-button {
    display: inline-block;
    padding: 20px 40px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 900;
    font-size: 1.2rem;
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
    transition: all 0.3s ease;
    animation: slideUp 1s ease-out 0.6s both;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(255, 107, 53, 0.6);
}

.hero-visual {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.stock-chart {
    width: 100%;
    height: 400px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.chart-lines {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 60%;
}

.chart-line {
    position: absolute;
    height: 3px;
    background: linear-gradient(90deg, #00d4ff, #4ecdc4);
    border-radius: 2px;
    opacity: 0.8;
}

.line-1 { width: 60%; top: 20%; left: 0; animation: pulse 2s ease-in-out infinite; }
.line-2 { width: 80%; top: 40%; left: 10%; animation: pulse 2s ease-in-out infinite 0.5s; }
.line-3 { width: 70%; top: 60%; left: 5%; animation: pulse 2s ease-in-out infinite 1s; }

/* Professor Section */
.professor-section {
    padding: 100px 0;
    background: rgba(26, 35, 50, 0.3);
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #00d4ff, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.professor-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.professor-image {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.professor-image::before {
    content: "김영익 교수";
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 1.5rem;
    font-weight: 900;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.professor-info h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: #00d4ff;
}

.professor-info h3 {
    font-size: 1.3rem;
    color: #ff6b35;
    margin-bottom: 30px;
    font-weight: 700;
}

.highlight-box {
    background: rgba(0, 212, 255, 0.1);
    border-left: 4px solid #00d4ff;
    padding: 20px;
    margin: 20px 0;
    border-radius: 10px;
    font-weight: 700;
}

/* Features Section */
.features-section {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 15px;
    color: #00d4ff;
}

/* Image Text Modules */
.image-text-section {
    padding: 100px 0;
    background: rgba(26, 35, 50, 0.3);
}

.image-text-module {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.image-text-module:nth-child(even) {
    direction: rtl;
}

.image-text-module:nth-child(even) > * {
    direction: ltr;
}

.module-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #4ecdc4, #00d4ff);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.module-text h3 {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: #ff6b35;
}

.module-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #b8c5d1;
    margin-bottom: 20px;
}

/* Community Rules */
.rules-section {
    padding: 100px 0;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.rule-item {
    background: rgba(255, 107, 53, 0.1);
    border-radius: 15px;
    padding: 30px;
    border-left: 5px solid #ff6b35;
}

.rule-number {
    font-size: 2rem;
    font-weight: 900;
    color: #ff6b35;
    margin-bottom: 10px;
}

/* Final CTA */
.final-cta {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
}

.final-cta h2 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #ff6b35, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.urgency-text {
    font-size: 1.3rem;
    color: #ff6b35;
    font-weight: 700;
    margin-bottom: 40px;
}

/* 성과 통계 섹션 */
.stats-section {
    padding: 80px 0;
    background: rgba(78, 205, 196, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: #ff6b35;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: #b8c5d1;
    font-weight: 700;
}

/* FAQ 섹션 */
.faq-section {
    padding: 100px 0;
    background: rgba(26, 35, 50, 0.3);
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    margin-bottom: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
    padding: 25px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #00d4ff;
    cursor: pointer;
    position: relative;
}

.faq-answer {
    padding: 0 25px 25px;
    color: #b8c5d1;
    line-height: 1.6;
}

/* 悬浮按钮 */
.floating-cta {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 400px;
    padding: 0 20px;
}

.floating-button {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 900;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    animation: pulse 2s infinite;
    white-space: nowrap;
}

.floating-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 107, 53, 0.7);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .professor-content,
    .image-text-module {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }

    .floating-button {
        font-size: 1rem;
        padding: 12px 25px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-number {
        font-size: 2.5rem;
    }
}